CN203325938U - Flexible conductive back plate suitable for encapsulation of staggered back contact IBC solar cells - Google Patents
Flexible conductive back plate suitable for encapsulation of staggered back contact IBC solar cells Download PDFInfo
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- CN203325938U CN203325938U CN2013203212972U CN201320321297U CN203325938U CN 203325938 U CN203325938 U CN 203325938U CN 2013203212972 U CN2013203212972 U CN 2013203212972U CN 201320321297 U CN201320321297 U CN 201320321297U CN 203325938 U CN203325938 U CN 203325938U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model provides a flexible conductive back plate suitable for encapsulation of staggered back contact IBC solar cells. The flexible conductive back plate comprises a polymer layer and a plurality of same electrode units arranged on the polymer layer, wherein the electrode unit comprises a conductive layer and an insulating glue film; the electrode units are adhered with the polymer layer by a glue material layer; the electrode units are strip-shaped conductive units, and a rectangular conductive layer is only laid near to the electrodes of the back contact IBC solar cells and exposed from the opening of the insulating glue film. The rectangular conductive layer is only laid near to the electrodes of the back contact IBC solar cells, so as to conquer the defects of the prior flexible circuit back board such as high price of the conductive layers and over high production cost, reduce the encapsulation loss of the parts and provide guarantee for mass production.
Description
Technical field
The utility model relates to a kind of compliant conductive back board structure that is applicable to the encapsulation of staggered back of the body contact IBC solar battery sheet, is applicable to solar energy back of the body contact IBC battery component encapsulation technology field.
Background technology
Solar energy is a kind of clean, new forms of energy of exhaustion efficiently and never, is one of important regenerative resource, is the important content of national governments' strategy of sustainable development aspect the utilization of resources.In Application of Solar Energy, photovoltaic generation is as one of important method of Application of Solar Energy, its noiselessness, non-maintaining, without advantages such as discharges, just be gradually gained popularity.At present, take crystal silicon solar energy battery as main in photovoltaic generation, this is mainly that very abundant reserves are arranged in the earth's crust due to silicon materials, and photovoltaic power generation technology is relatively ripe, and the lower and commercialization battery that compare other type of cost has relatively high conversion efficiency.The back of the body contact assembly of high transformation efficiency is the main trend of Crystalline Silicon PV Module development, minimizing cell piece front gate line blocks and the welding of positive conduction welding is the direction of raising cell piece and assembly conversion efficiency, the thickness that reduces silicon chip is to realize the strong approach reduced production costs, so the back of the body thinner, that efficiency is higher contact cell piece is the development trend of cell piece.The compliant conductive backboard is a kind of just is placed in a kind of technology on the interconnection graph backboard that is integrated in conductive foil to back of the body contact cell piece, and electrically contacting by conducting resinl between battery realizes.Use conductive backings, with conducting resinl, the back of the body is contacted to the IBC cell piece and carry out circuit connection and encapsulation, can adapt to the development trend of cell piece attenuation, and can reduce the encapsulation process fragment rate, realize batch automatic production.But it is higher to use flexible PCB to carry out packaging cost, at present, the flexible PCB price be conventional photovoltaic component back plate price 3-5 doubly, due to its high cost, use the photovoltaic module cost of this material package higher, a little less than the market competitiveness.Be bonded in the cost proportion maximum that metal conducting layer on whole backboard accounts for this circuit board in flexible PCB.Therefore how to reduce the cost of flexible PCB, the packaging cost of photovoltaic module is reduced, and the encapsulation that can meet back of the body contact battery is a difficult problem of this technical field.
Summary of the invention
Technical problem to be solved in the utility model is for the deficiencies in the prior art, and a kind of reasonable in design, simple, the with low cost compliant conductive backboard that is applicable to the encapsulation of staggered back of the body contact IBC solar battery sheet of mounting process are provided.
The technical problems to be solved in the utility model is achieved through the following technical solutions.The utility model is a kind of compliant conductive backboard that is applicable to the encapsulation of staggered back of the body contact IBC solar battery sheet, and it is characterized in that: this compliant conductive backboard comprises polymeric layer and is located at the some identical electrodes unit on polymeric layer; Described electrode unit is comprised of conductive layer and insulated rubber film; Between electrode unit and polymeric layer, by layer of adhesive material, bond together; Described electrode unit is the bar shaped conductive unit, and the electrode unit part is only laid one deck rectangle conductive layer near the electrode of back of the body contact IBC cell piece, and conductive layer exposes by the opening on insulated rubber film.
The back of the body that is applicable to interlock described in the utility model contacts in the compliant conductive backboard of IBC solar battery sheet encapsulation: the width of each electrode unit is preferably the 10-50 millimeter, and length is preferably the 100-500 millimeter.
The back of the body that is applicable to interlock described in the utility model contacts in the compliant conductive backboard of IBC solar battery sheet encapsulation: the conductive layer of described electrode unit is preferably copper layer or aluminium lamination, and its thickness is preferably the 20-400 micron.
The back of the body that is applicable to interlock described in the utility model contacts in the compliant conductive backboard of IBC solar battery sheet encapsulation: the thickness of each insulated rubber film is preferably the 20-160 micron, and width is preferably the 10-50 millimeter.
The back of the body that is applicable to interlock described in the utility model contacts in the compliant conductive backboard of IBC solar battery sheet encapsulation: the perforate size of insulated rubber film and shape contact IBC cell piece electrode size and shape with the back of the body is complementary.Purpose is to expose the conductive layer of electrode unit.
In the utility model, electrode unit is distributed near the back of the body contact IBC cell piece electrode on polymeric layer; Mode by conductive adhesive contact the IBC battery electrode by electrode unit with the back of the body and bonds together, and realizes the circuit connection of back of the body contact IBC cell piece.
The design of the utility model thing electrode unit can effectively reduce the materials that are laid on the conductive unit on whole polymeric layer.Described conductive unit position is by back of the body contact IBC cell piece residing determining positions in whole assembly, only near the electrode position place that connects adjacent two back of the body contact IBC cell pieces, lay one deck bar shaped conductive unit, the circuit realizing between cell piece, between battery strings connects.
Compared with prior art, the utlity model has following advantages:
1. the utility model is by designing a kind of compliant conductive back board structure that is applicable to staggered back of the body contact IBC solar cell package, structure is ingenious rationally, can reduce the conductive metal layer area, significantly reduce the production cost of compliant conductive backboard, the large-scale production that contacts the cell piece assembly for the back of the body provides guarantee.
2. the utility model interlocks and carries on the back the compliant conductive back board structure of contact IBC solar cell package by design, the conductive unit used is in the requirement that both meets current delivery, can well play again the effect of the positive and negative gate line electrode of insulation IBC cell piece, this conductive backings can be good at being applicable to the thinner development trend of following silicon chip, there is the component package loss lower than welding procedure, aspect the raising component efficiency, positive meaning is being arranged.
3. the utility model is owing to only near back of the body contact IBC cell piece electrode, laying conductive layer, thereby solved the difficulty that flexible circuit backboard conductive layer was expensive in the past, production cost is too high, reduced the component package loss, for large-scale production provides safeguard.
The accompanying drawing explanation
Fig. 1 is the utility model compliant conductive backboard schematic diagram.
Fig. 2 is the utility model electrode unit schematic diagram.
Fig. 3 is the connection diagram of the utility model electrode unit in assembly.
The schematic diagram that Fig. 4 is the utility model back of the body contact cell piece assembly and the bonding one side of compliant conductive backboard.
Wherein, 1, polymeric layer; 2, layer of adhesive material; 3, conductive layer; 4, insulated rubber film;
5, conducting resinl filler; 6, punching EVA; 7, back of the body contact IBC cell piece; 8, common EVA; 9, toughened glass; 10, link block between battery strings; 11, lead-in wire exit; 12, back of the body contact IBC cell piece electrode; 13, electric conductor.
Embodiment
Referring to accompanying drawing, further describe concrete technical scheme of the present utility model, so that those skilled in the art understands the utility model further, and do not form the restriction to its right.
Embodiment 1, and with reference to Fig. 1 and 2, a kind of compliant conductive backboard that is applicable to the encapsulation of staggered back of the body contact IBC solar battery sheet: this compliant conductive backboard comprises polymeric layer 1 and is located at the some identical electrodes unit on polymeric layer 1; Described electrode unit is comprised of conductive layer 3 and insulated rubber film 4; Between electrode unit and polymeric layer 1, by layer of adhesive material 2, bond together; Described electrode unit is the bar shaped conductive unit, and the electrode unit part is only laid one deck rectangle conductive layer 3 near the electrode 12 of back of the body contact IBC cell piece 7, and conductive layer 3 exposes by the opening on insulated rubber film 4.
Embodiment 2, and the described back of the body that is applicable to interlock of embodiment 1 contacts in the compliant conductive backboard of IBC solar battery sheet encapsulation: the width of each electrode unit is the 10-50 millimeter, and length is the 100-500 millimeter.
Embodiment 5, and the described back of the body that is applicable to interlock of embodiment 1 contacts in the compliant conductive backboard of IBC solar battery sheet encapsulation: the perforate size of insulated rubber film 4 and shape contact the electrode 12 of IBC cell piece 7 size and shape with the back of the body is complementary.
Embodiment 6, any one described a kind of compliant conductive backboard a kind of structure applications in assembly that is applicable to staggered back of the body contact IBC battery sheet packaging of embodiment 1-5, with reference to Fig. 3 and 4, be followed successively by from bottom to up: polymeric layer 1, layer of adhesive material 2, conductive layer 3, insulated rubber film 4, conducting resinl filler 5, punching EVA6, back of the body contact IBC cell piece 7, common EVA8, toughened glass 9; The electric conductor 13 exposed contacts electrode 12 exactitude positions of cell piece 7 with the back of the body through punching EVA6, and bonding mode realizes the conducting of assembly circuit by conducting resinl filler 5, thereby realize that the circuit between back of the body contact cell piece connects, and by link block 10 between string, realize that the circuit between back of the body contact IBC battery strings connects, the assembly electric current is drawn by lead-in wire exit 11.
Claims (5)
1. one kind is applicable to the compliant conductive backboard that staggered back of the body contact IBC solar battery sheet encapsulates, and it is characterized in that: this compliant conductive backboard comprises polymeric layer and is located at the some identical electrodes unit on polymeric layer; Described electrode unit is comprised of conductive layer and insulated rubber film; Between electrode unit and polymeric layer, by layer of adhesive material, bond together; Described electrode unit is the bar shaped conductive unit, and the electrode unit part is only laid one deck rectangle conductive layer near the electrode of back of the body contact IBC cell piece, and conductive layer exposes by the opening on insulated rubber film.
2. the back of the body that is applicable to interlock according to claim 1 contacts the compliant conductive backboard that the IBC solar battery sheet encapsulates, and it is characterized in that: the width of each electrode unit is the 10-50 millimeter, and length is the 100-500 millimeter.
3. the back of the body that is applicable to interlock according to claim 1 contacts the compliant conductive backboard that the IBC solar battery sheet encapsulates, and it is characterized in that: the conductive layer of described electrode unit is copper layer or aluminium lamination, and its thickness is the 20-400 micron.
4. the back of the body that is applicable to interlock according to claim 1 contacts the compliant conductive backboard that the IBC solar battery sheet encapsulates, and it is characterized in that: the thickness of each insulated rubber film is the 20-160 micron, and width is the 10-50 millimeter.
5. according to the described compliant conductive backboard that is applicable to the encapsulation of staggered back of the body contact IBC solar battery sheet of claim 1 or 4, it is characterized in that: the perforate size of insulated rubber film and shape contact the electrode of IBC cell piece size and shape with the back of the body is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203212972U CN203325938U (en) | 2013-06-05 | 2013-06-05 | Flexible conductive back plate suitable for encapsulation of staggered back contact IBC solar cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203212972U CN203325938U (en) | 2013-06-05 | 2013-06-05 | Flexible conductive back plate suitable for encapsulation of staggered back contact IBC solar cells |
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| CN203325938U true CN203325938U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203212972U Expired - Fee Related CN203325938U (en) | 2013-06-05 | 2013-06-05 | Flexible conductive back plate suitable for encapsulation of staggered back contact IBC solar cells |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253169A (en) * | 2014-09-28 | 2014-12-31 | 苏州中来光伏新材股份有限公司 | Main-grid-free high-efficiency back contact solar battery module, assembly and preparing process |
| CN107958943A (en) * | 2017-12-26 | 2018-04-24 | 南京日托光伏科技股份有限公司 | A kind of photovoltaic module and production method based on IBC cell packages |
| CN108172654A (en) * | 2017-12-20 | 2018-06-15 | 北京康普锡威科技有限公司 | Solar cell pond piece component and its assemble method |
| CN108538944A (en) * | 2018-03-09 | 2018-09-14 | 天合光能股份有限公司 | A kind of photovoltaic conductive backboard and photovoltaic cell component |
| CN110473939A (en) * | 2019-08-15 | 2019-11-19 | 江苏日托光伏科技股份有限公司 | A kind of back contacts large scale battery component transparent flexible conduction core plate and preparation method thereof |
| CN110556443A (en) * | 2019-10-14 | 2019-12-10 | 绵阳金能移动能源有限公司 | Flexible solar cell interconnection assembly and preparation method thereof |
-
2013
- 2013-06-05 CN CN2013203212972U patent/CN203325938U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253169A (en) * | 2014-09-28 | 2014-12-31 | 苏州中来光伏新材股份有限公司 | Main-grid-free high-efficiency back contact solar battery module, assembly and preparing process |
| CN104253169B (en) * | 2014-09-28 | 2016-09-07 | 泰州中来光电科技有限公司 | Without main grid, high efficiency back contact solar cell module, assembly and preparation technology |
| CN108172654A (en) * | 2017-12-20 | 2018-06-15 | 北京康普锡威科技有限公司 | Solar cell pond piece component and its assemble method |
| CN107958943A (en) * | 2017-12-26 | 2018-04-24 | 南京日托光伏科技股份有限公司 | A kind of photovoltaic module and production method based on IBC cell packages |
| CN108538944A (en) * | 2018-03-09 | 2018-09-14 | 天合光能股份有限公司 | A kind of photovoltaic conductive backboard and photovoltaic cell component |
| CN108538944B (en) * | 2018-03-09 | 2024-01-30 | 天合光能股份有限公司 | Photovoltaic conductive backboard and photovoltaic cell assembly |
| CN110473939A (en) * | 2019-08-15 | 2019-11-19 | 江苏日托光伏科技股份有限公司 | A kind of back contacts large scale battery component transparent flexible conduction core plate and preparation method thereof |
| CN110556443A (en) * | 2019-10-14 | 2019-12-10 | 绵阳金能移动能源有限公司 | Flexible solar cell interconnection assembly and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20200605 |